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Charging issue


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2012 Dodge Journey SXT FWD 3.6L engine 113568 miles

 

3 weeks ago my battery died when i stopped for some coffee on the way to work.  My gf brought my Acadia down and i jumped it to get it home.  I bought a new battery, installed it and thought I was good.  

The next morning I noted that my headlights were dimming while I was sitting at a red light and   my blower fans (on high) were not maintaining a constant speed.  I replaced the alternator...no big deal...now with a new alternator...i still have the dimming lights and irregular blower fan...my battery also died without it running for a few days...I just replaced the battery and the alternator tested good on a bench test.  I haven't put everything back together yet....

If this were a heavy truck I'd go straight to the voltage regulator....but the journeys dont have one...the fuses and relays are good...is it possible the Acadia has a higher Amperage and burned up the PCM when I jumped it?  everything currently checks out and I dont want to waste more time than i need to on this issue.  Any ideas anyone?

 

thanks for any help!

~geo

 

good battery (new)

alternator output 14.5 and 160A (bench test)

maybe new plugs, and wires? 

no bad fuses and relays all check out...

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well you are past the mileage on the plugs, but that wouldn't be your problem, did you have a load check done on the new battery??? what brand alt did you use yrs ago my dad had problems with an alt on his caravan they kept replacing them and then he would have problems he finally took it to a dodge dealership they put on a oem alt and no more problems, manger said the system on the caravan didnt respond well to some off brand alt. just a thought before you start throwing $$ into other parts. 

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i have load tested the new battery before leaving the store...it was great   it never occurred to me that the brand of alternator could be the issue...i also just look at the numbers to see how the components test...as i mentioned it did start out as a simple dead battery (over 5 yrs old battery) and I jumped it with a GMC Acadia...significantly higher amperage in that system...when the weather clears, I may just put everything back together and see what happens...maybe that other battery had a dead cell in it...

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I doubt the Acadia did anything to your DJ unless you hooked it up wrong, which I doubt or you would be asking why did my battery blow up. While your Acadia is capable of producing more amperage then your DJ, it will only supply what is being asked for.  
 

did you charge the battery after installing the new alternator?  The dimming lights, fan lead me to an  alternator/charging issue.  Loose/corroded connector,etc.  Could also be a loose battery cable. New cars are very particular when it comes to electrical components.

Edited by OhareFred
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